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Quartz Microfracturing in the North Crop of the South Wales Coalfield

Published online by Cambridge University Press:  01 May 2009

J. C. Roberts
J. C. Roberts
Affiliation:
Magee University College, Londonderry.
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Abstract

A microscopic study of sandstones of Old Red Sandstone and Carboniferous ages along a part of the North Crop of the South Wales Coalfield reveals that the rocks are extensively fractured. The fractures occur in the quartz grains and are often filled with bubble-like inclusions. These planes of inclusion were studied in specimens over a wide area, and are related to the directions of faulting and jointing. The consistency in trend between the macro and micro-structures suggests a homogeneity of the deforming stresses.

Type
Articles
Information
Geological Magazine , Volume 102 , Issue 1 , February 1965 , pp. 59 - 72
Copyright
Copyright © Cambridge University Press 1965

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References

REFERENCES

Balk, R., 1952. The fabric of quartzites near thrust faults. J. Geol., 60, 415–436.CrossRefGoogle Scholar
Bonham, L. C., 1957. The structural petrology of Pico Anticline. J. Sediment. Petrol, 27, 251–264.Google Scholar
Borg, I. et al. , 1960. Experimental deformation of St. Peter Sand: a study of cataclastic flow. Mem. geol. Soc. Amer., 79, 133–193.Google Scholar
Owen, T. R., 1953. The structure of the Neath Disturbance between Brynian Gleision and Glynneath, South Wales. Quart. J. geol. Soc. Lond., 109, 333–359.CrossRefGoogle Scholar
Owen, T. R. and Jones, D. G., 1956. The rock succession and geological structure of the Pyrddin, Sychryd, and Upper Cynon Valley, South Wales. Proc. Geol. Ass. Lond., 67, 232–250.Google Scholar
Riley, N. A., 1947. Structural petrology of the Baraboo Quartzite. J. Geol., 55, 453–475.CrossRefGoogle Scholar
Roberts, J. C., 1961. Feather-fracture and the mechanics of rock-jointing. Amer. J. Sci., 259, 481–492.CrossRefGoogle Scholar
Tuttle, O. F., 1949. Structural petrology of planes of liquid inclusions. J. Geol., 57, 331–356.CrossRefGoogle Scholar